Scam call from unknown untracable number

I Received a call from +27 10 001 6170. The caller claimed they have a delivery for me, My Mother in law received the same call for "My Delivery" The Company they claimed send me the 5Kg Parcel does not exist (I checked on the net after the call) The Caller can not be traced by phone number, when phoning back the number it cuts of immediately. The caller requested my e-mail address to fwd me the parcel information, it is now 2 Hrs later, No Mail. I am convinced these are scammers, possibly operating in Johannesburg